[2] After several years, Falk began teaching at the Gateshead Seminary, where he delivered lectures on the laws of Shabbos and modesty and hashkafa.

[3] He also taught at Gateshead Yeshiva, giving classes on the laws of Shabbos and blessings, as well as at the Beis Chaya Rochel seminary.

[2] Falk was a pioneer in the field of halachic awareness regarding insects in fruits and vegetables, a topic that was not widely understood at the time.

[4] One of his children, Rabbi Moshe Falk, is a maggid shiur in Yeshivas Nachlas Tzvi in Toronto.

[7] Another sister is married to Dayan AD Dunner, a prominent rabbi and posek in Stamford Hill, London.